22
23. TROUBLE-SHOOTING AND REPAIR
PROBLEM/SYMPTOM
CAUSE
REPAIR
The valve doesn’t open: neither
Water is not reaching
Ensure that Master-
automatically per program nor by
the system: Electric
valve is open: clean
manually-operated computer
command not reaching
filter; check the
activation.
the valve.
extension wire.
No display.
Malfunction in power-
Check power source,
system or faulty battery.
the transformer or
replace the battery.
Sensor symbol permanently blinking
The sensor bridge is
Replace sensor or
and valve does not open.
disconnected.
repair connection.
Valve does not close although “click” Valve handle not in
AUTO
Move valve handle to
heard when activated.
mode; dirt and scale in valve;
AUTO
mode; clean the
malfunction in valve such
valve; replace the valve.
as a torn diaphragm.
Controller operations corrupted.
Memory flawed.
Press
RESET
button,
Reset hour and date.
